JPS62137191A - Butt welding method for bar like body - Google Patents

Abstract

PURPOSE:To perform a joining welding in a beeline with good accuracy and yet to enable the butt welding of a long and large body to be welded by performing it by charging a bar like body from the cross direction at right angles with the longitudinal axial direction into the jig for junction of a set member. CONSTITUTION:The set bolt 10c which passes a ring 5 through is pressed to a bolt 9 by closing the groove part by the ring 5 after fitting the upper end of an anchor bolt 9 into the groove part by opening the side face opening groove part by turning the ring 5 in the lowermost part holder 3c. On the other hand the bolt 9 is fixed to the jig 1 for junction by pressing the separate set bolt 11c which passes the ring 5 through similarly to a peripheral groove 8. The uppermost part holder 3a and center part holder 3b are opened by rotating the ring 5, an extension material 13 is inserted from the cross direction and fitted, and the lower end of an extension material 13 and the upper end of the bolt 9 are set to the recessed part of a backing metal 12. The ring 5 is then fixed to the holder main body by set bolts 10a, 10b, 11a, 11b and the extension material 13 and anchor bolt 9 are welded 14 crosswise.

Description

Detailed Description of the Invention (Field of Application of Industry - 1t) The present invention is applicable to wooden construction, field equipment installation, anchor bolts for foundations, on-site welding of reinforcing bars, or blast furnace tapping. -1 Komei hot water stick, other 11
This invention relates to a method for butt welding bar-like objects over a wide range of applications, which is useful for joining work of rolling stock steel bars.

(Prior art) For example, in 1-reinforced concrete construction for wooden buildings, reinforcing bars of a predetermined length are used, and as T and IE progress, another reinforcing bar is added to 1- of the reinforcing bars that become shorter on site. Replacement welding work is often carried out, and in this case, conventionally, a short reinforcing bar of around 1 m was placed on top of the shortened reinforcing bar, and these were tied together using "branch wire" and "1-piece wire". Next, the long reinforcing bars to be joined were placed concentrically on the shortened wire (h), and tied together at the No. 1 wire so that it was placed on the -11 dowel, and butt welded.

In addition, when welding anchor bolts used to install equipment during factory construction on-site, it is difficult to join and weld the supplementary material concentrically and in a straight line with a large number of anchor bolts with high precision, so the height of the anchor bolts is high. If the length was incorrect, the foundation would be destroyed and replaced with an anchor bolt of Ichikawa's length.

(Problems to be Solved by the Invention) Therefore, conventional on-site butt welding of this type of rod-shaped body is extremely inefficient (and may result in poor linear accuracy).
After welding, there were many cases where the bends had to be straightened using a gas burner, etc. In addition, if the anchor bolt is incorrectly installed and the length of the anchor bolt is insufficient, or if the plan has to be extended longer due to a change in the plan, digging up the foundation, replacing it, etc.
The problem was that this would not be possible without backfilling.

It is an object of the present invention to provide a butt welding method that eliminates such disadvantages.

(Means for Solving the Problems) When butt welding rod-like objects together, the present invention provides a joining jig by attaching holders having side opening grooves and rings for opening and closing the connecting rods at multiple locations on the connecting rod. , and in the side opening groove of the holder at one end of this joining jig -
After inserting and fixing one rod-like object, the other rod-like object is inserted into the side opening groove of the remaining holder from the lateral direction perpendicular to the longitudinal axis of the rod-like object, and the ring is closed and fixed,
It is characterized by a method of butt welding rod-like objects in which both rod-like objects are aligned coaxially and butt-welded.

(Function) According to paragraph 2, in order to butt weld rod-like objects, when both are coaxially welded, the rod-like objects are placed in a welding jig serving as a seven-edge member at a right angle to the long P axis direction. Since it is charged from the horizontal direction, it is possible to weld joints in a straight line with the center aligned, and there are no length restrictions and it is possible to butt weld 6 pieces of long workpieces. .

In addition, the joining jig described in 1- is constructed from a pipe-shaped member,
It is possible to fit the workpiece into this and butt weld it, but this would require a fairly large gap for extraction, and it would also be necessary to slide the material to the end of the joint. The jig will be removed later by pulling it out, but in narrow spaces or places where there is no scaffolding, it may be difficult to remove the jig.
Therefore, joining work at high places is dangerous.

However, in the present invention, the workpiece to be welded is mounted on the jig in a direction perpendicular to its long sleeve, and removed in the same manner after welding, so that work can be carried out at high places or in narrow spaces.

(Example) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The joining jig (1) is connected to the connecting rod (2) and the bottom 3.
It consists of holders (3a), (3b), and (3c) attached to the locations. These holders (3a), (3b, and 3c) include a disc-shaped holder body (4) and a ring (5) fitted onto the ring so that it can rotate freely, and the connecting rod (2) is connected to each holder body (4). 4) is inserted into the 1"1 through hole (6) and fixed, and a side opening groove (7) which is U-shaped in plan view is provided at the end of each holder main body (4). C-shaped, ring (
5) is configured to open and close by its rotation. Also,
A circumferential groove (8) is recessed in the outer peripheral surface of the holder main body (4),
By engaging and pressing the tip of the set bolt screwed into the ring (5) into the M groove, the holder body (4)
However, the ring (5) can be fixed at any location. Note that the side opening grooves (7) of each holder (3a), (3b, and 3c) are provided at positions that extend in a straight line.

1- When adding an anchor bolt using the joining jig 14 (1), first rotate the ring (5) in the lowermost holder (3C) as shown in Fig. 3 to open the side opening groove (
7) and fit the -1 end of the anchor bolt (9) into the groove, then insert the ring (5) into the groove (
7), and then tighten the set bolt (10) through the ring (5).
c) against the inset anchor bolt (3), while another set bolt (llc) also passed through the ring (5)
is pressed against the circumferential groove (8) to fix the anchor bolt (9) to the joining jig (+). In addition, anchor bolts (9
) is the bottom holder (3C) and the center holder (3C).
3b) and the backing money (12) shown in Figure 4.
interposed between the top holder (3a) and the center holder (3b), and then open the ring (5) in the same way as shown in Figure 2 and place the 1-' With the groove (7) open] 1, insert and fit the filler material (I3) from the lateral direction shown by the arrow (A) in FIG.
] - Set the do end of this additional material (13) and the -1 end of the anchor bolt (9) in the concave part (12a) of the backing pad (12) to match the root gap, and then attach each ring ( 5), and set bolt (IOa) (1
0b) Fix the ring (5) to the holder body (4) with (lla) (Ilb). As a result, the additional material (1
3) is fixed to the joining jig (1), and the anchor bolt (
9) and the center line (A), weld the additional material (13) and anchor bolt (9) from the side (14) t, , L. After that, each holder (3a) (3)
bH3c) set bolt (10a) ~ (IOc) (
Loosen Ila) to (Ilc), open each ring (5), and remove the joining jig (1) by moving it in the direction of arrow (B) (lateral direction) in FIG. 1.

Furthermore, to describe a specific example of the method of the present invention regarding foundation work for equipment installation during factory construction, the M
It was discovered during installation that the height of the -25 anchor bolt was incorrect at 1φ! If there is a 1r failure, use a joining jig (1) with a height of 50. ,,outer diameter 70φ
A through hole of 25φ is opened in the holder main body (4), and one of the inner holes is opened laterally to be used for the groove (7) on the side surface 1j. , Shift the Me bolt 90 degrees and remove the ring (5) attached to the threaded part. And, as the connecting rod (2), 24.8φ,
+ = + Pass a round bar of 350 mm through the through hole (6),
m+w pitch 1-medium position holder (3a) (3
b) Manufacture one with (3c) arranged. On the other hand, about 150
After cutting the threaded part of the anchor bolt (9), which has a height of only 1 m, to a height of approximately 100mm and grinding the cut end to a height of approximately 50mm, a height of 30mm was manufactured separately.
At 011+1, a supplementary material (13) with a thread of about 100 ra square length on the negative end was butt-welded using the previous method.

According to this, three workers can perform the work between two L1s at one location.
All repairs, from welding to finishing, were completed, and we were able to add and weld anchor bolts with perfect straightness. Incidentally, if the method of the present invention is not applied, it will be necessary to destroy the - part of the concrete foundation with a breaker, replace the anchor bolt, and embed it. Since the first step was to stall, the great effects of the present invention were confirmed.

Of course, the specific example described in 1-1 is only an example of application of the method of the present invention.
Applicable to water, μ, and slope connections in all directions.

In addition, although anchor bolts and their grouping materials have been described as examples of rod-like objects to be butt welded, the present invention can of course be used for joining deformed reinforcing bars, as well as for joining welding pipes and joining square steel.

Furthermore, the present invention ranges from a small diameter called a tertiary muscle with a diameter of 9 mm to a diameter of 50 mm. , round bar or 50A1100A12
You can also join and weld pipes such as 00A, and if you make the connection at a desired angle of 10 to 45 degrees instead of a straight line, 2
The rod-shaped body of a book is ``1'' at an angle of 1.
Easy, high efficiency, even under adverse local conditions, even with zero
Can perform high-quality joint welding.

Furthermore, if the joining jig (+) is made of aluminum or an alloy thereof for on-site use, portability is excellent and the usability of the present invention is greatly expanded.

Naturally, the shape of the 1-1 groove (7) between the side surfaces of the joining jig (1) is adapted to the cross section of the rod-shaped object to be welded, so it may be square, triangular, hexagonal, or grooved. You can choose from shaped steel, angle steel, and flat steel.

Note that the joining welding in the present invention is basically the normal type of covered arc welding, but it may also be enclosed welding, MIG welding,
MAG welding, gas welding, COs welding, non-gas welding, T
All types of IG welding can be used, and base materials such as mild steel, low alloy, high alloy, and nonferrous metals can be used.

(Effects of the Invention) As described in 11 below, according to the present invention, joining welding can be performed in high places and narrow places, which was previously impossible, and joining efficiency can be increased to 1π. The linearity value and precision after welding are excellent, and the effect of industrial LiU is extremely remarkable.

In addition, since the joining jig performs the three functions of attaching, centering, and fixing the workpiece, it is efficient and easy to handle, and it eliminates the need for a large number of jigs, making the work easier. In addition to being excellent in performance, it is also advantageous in terms of cost.

Figure 40 is a front view showing one embodiment of the present invention, and Figure 1 is a front view, Figures 2 and 3 are diagrams illustrating a method of butt welding a rod-like object.
The figure is a sectional view for explaining the operation of a part of the holder.
The figure is a cross-sectional view showing the arrangement of four washers.

(1)--Joining jig, (2)--Connecting rod, (3a
) (3b) (3C)...Holder, (5)...
Ring, (7)...1'' groove between sides, (9)...Anchor bolt (bar-shaped object), (+3)...Additional material (bar-shaped object).

Claims (1)

[Claims] When butt welding rod-shaped objects, a joining jig is constructed by attaching holders having side opening grooves and rings for opening and closing the connecting rods at multiple locations, and a holder at one end of this joining jig. After fitting and fixing one rod-like object into the side-opening groove of the holder, the other rod-like object is inserted into the side-opening groove of the remaining holder from the lateral direction perpendicular to the longitudinal axis of the rod-like object, and the ring is closed and fixed. A method of butt welding rod-shaped objects, in which both rod-shaped objects are aligned coaxially and butt-welded.